What do you mean exactly?.... also you are only able to have 1 cosmetic showing even if you have all 3 slots filled with cosmetics.
Our plugin is pretty ancient (2016) regarding this, and we have plans to support that, but as of now, it is a low priority.that was before i deleted my cosmetics (real ones)
i think you should be able to equip cosmetics through the wonderland.tf menu, even if you dont have any real cosmetics. is there a reason for this?